Locomotive buffer-beam.



NO. 854,131. PATENTED MAY 21, 1901.

c. T. wE sTLAKE. LoooMoTlvE BUFFER BEAM.

APPLICATION FILED FBB.2, 1907'.

Il Il HL l' Locomotive Butler-Beams, of which the #tot through brackets 4, formed on the outer lace of the rear member 1,

yframe, and has for its vobject to produce' a Fig. 5, a viewpartly in top plan, and partly tions thereof on lines 6, 6, and. 7, 7, respec-V integral throughout and practically Lsbaped UNITED STATSPATENT OFFICE.

CHARLES 'it Wiesmann, OF ST. LOUIS, MISSOURI, ASsIeNOR To DAVIS LOCO- Meriva WHEEL COMPANY, or sr. LOUIS, MISSOURI, A CORPORATION OF DELAWARE.

LoooMoTlvE BUFFER-BEAM Specification of Letters Patent.

Application filed February 2, 1297. Serial No. 355,446.

Patented May 21, 1907.

l'o 11]/ lll/mm1 'ft 'uw/y con/cern: l r

Be it known that l, CHARLES T. VESTLAKE, l a citizen of the linited States, residing iat-l St. Louis, in the State of Missouri, have invented a new and useful lmproyement in lowing is a speeilidation.

beam or end sill for a locomotive or ear underbull'erdieam having its membersv arranged to the best advantage for insuring the direct transmission therethrough of the buliing'and other coneussive stresses to the'longitudinal beams or sills of the said frame, and thereby preventing fracture vof jacent part-s of the I)nfier-beam and at the same time maintaining its maximum strength with the least amount of material.

The invention consists in l'eatures of novelty as hereinafter described and claimed, reference being had to the accompanying drawing forming part of this specilication, Whereon, A

Figure l, is a topwplan of a preferable forml of my improved imiter-beam; Fig. 2, a Ver tical transverse section thereof on line 2, 2, in Fig. 1J; Fig. i, a cross section through one of the inclined members Oi the beam on line 3, 3, in lfig. 1, and Fig. 4,- an end elevation of the beam as seen from the right of Fig. l;

in horizontal section, on line 5, 5, in ligs. 6

and 7, of a modilied form of. the builenbi-iam, and Figs. 6 and 7, vertical transverse seetively in Fig; 5.

Like letters and numerals of reference denote like parts in all the iigures.

l-elerring to Figs. 1, 2, 3, and '4, e represents my in'iproved imll'enbeam or end sill, which is preferably Composed oi Cast steel in cross section, having when assembled, its ilaiiged members 1, and 2, vertically are ranged, therear or inside members l being adapted to bear against the ends ol the longitudinal beams b ol: the engine frame (or sills of the ear .tramo as the case may be) to which the butler-beam a is secured in the presentcase by bolts 3, which pass 'vertically and through the beams bias shown, or in any other suitable manner. The opposite or front member 2, oi the buffer-beam (L yis preferably parallel to the rear member 1, for a suitable distance on each side of the middle of the beam a, or longitudinal Center ofthe engine or car frame,

.and thence inclined toward and united with each endv of' the rear member 1, where the My invention relates to a metallic bufl'er'- beam a is formed preferabl f with an inside and outside push pole pocket or concave redess 5. Through the horizontal web 6, which unites the rearand iront members 1 Iand ZtOgether, are formed openings i and 7, the openings 7 being separated lfrom eaon "otherat the middle oi the beam a by a portion. of the-web (i, which is intersectcd at' right angles by ribs S coinciding with .the longitudinal center of the frame xand uniting With the rear and front members 1 and 2, to which, With 1the said portion of the 'web 6 they form a middle intermediate strut. Similarly, eaehopening 7 is separated from its ladjacent opening 7 by an inclined portion ot the web 6 which is intersected Vat right angles by ribs 9, the ribs. I9 uniting with the rear and iront members 1 and 2 `and forming with the said inclined portion of the web 6 .an inclined strut thereto between the iront member 2 and that portion of the rear me1n-y ber.y l, immediately in front of the longitudi-` nal trame beam b. Tol the outside iac-e of the front member 2 of the beam (L is fixed ythe bracket 10 (indicated by dotted lincs in Fig. 1) .for the coupler. Or in lieu .of the brac-liet 10, a draw-bar `pocket adapted to receive a suitable draftfrigging may be sub stituted therefor. p l

By this construetiom the boiling stress on the -iront member 2 oll the beam a is transmittod by compression through theinclincd struts 9, which consequently tend to spread' at, and produce an opposing` and eqnalizing tension of the rear member 1 between its sup.- ports or points of attnclnnent to the longitudinal beams b or sills of thc frame .through which the resultant stress Ais transmitted.

When pulling` on the coupler tln'ougli the loo bracket 1U, the stress on the iront member 2 produces tension oi' thc inclined struts 9 and a (.fonsemient. opposing and cqualizing compression of the rear mcmbcr 1 between its said su) erts. Furthermore in anlrinr 1o pressure tothe push pole pocket 5 att Je en oi the beam (L as indicated by the arrows in Fig. l, the .resulting tension of -the front is qualized by pai'opposin eqni' "'jression4 of l the Tear.I member 1, an con` 'vrsely, whe ushin on the inside pocket 5.

other Wor s, b t e above construction,I "all the said' mem ers are statically arranged, so that a force acting on any mem- .ber-,1s balanceilby an equal force on another member acting in an op osite direction.

In Figs. .5, 6, and 7, t e buffer-beam a 1n lieu of being I-shaped in cross section as be# ;foredescribed, `is box-shaped, having its top ils'.

A,side solid throughoutMand its bottom side .formed with lighting'-pnings' 11, the struts 8 and 9', wluch unite the rear and front members 1"x and 2 together, bein similar to he strutsS and 9 be'ore describe A "-I amaware that beamsoy this class have been made' ovarious shapes 1n cross secti'on' and general cigniiguratiom'bubwith their com onent .members arranged Without regar' "to statical 'require/ments. `o insure-an equilibrium of forces therethrough. I'

front member opposite to, and spaced apart.

from the rear member, a strut uniting the said memberson each side of the longitudinal center of the said frame, the said struts diverging from the front member to their junction with the rear member at points'opposite to the said ends of the corres on'ding.

sills, and means for xi the saidsills, substantial y as described.

In testimony whereof 'I have hereunto' signed my name to this specification in the presence of two subscribinr witnesses.

. CHARLES fr. WESTLAKE. Witnesses:

EDWARD W. FURRELL, .MARY D. WIHTCOMB.

35 the buleream to 

